Performance

vSAN Design Considerations – Deduplication and Compression

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The post "Write Buffer Sizing in vSAN when Using the Very Latest Hardware" described many of the basics around vSAN's implementation of a two-tier storage system, and how hardware can change the performance of the system. How do software-related settings such as deduplication and compression impact performance? Let's step through what it is, how it Read more...
vSAN Performance Metrics

Monitoring vSAN Performance

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Determining the root cause of performance issues in any environment can be a challenge, but with environments running dozens, if not hundreds of virtual workloads, pinpointing the exact causes, and understanding the options for mitigation can be difficult for even the experienced administrator. Since a vSAN cluster is made up of locally-attached disks, there are Read more...

What is the Maximum vSAN VMDK Size?

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How big should my VMDKs be on vSAN? I recently was asked about VMDK size best practices with vSAN. The maximum supported VMDK size is 62TB. Much like discussions around the largest size for a vSAN or vSphere cluster (Check out this post!), this is very much a nuanced operational discussion with a lot of Read more...

Performance Capabilities in Relation to vSAN Cluster Size

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The flexibility of cluster design and sizing is one of the key benefits with vSAN. This naturally leads to questions on the performance capabilities of vSAN relative to cluster size. Will an application run faster if the cluster consists of more hosts versus fewer hosts? The simple answer is "no" and has been covered in Read more...
vForum

#vSANChat: How to Make the Most of vForum Online Fall 2019

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vSAN Tweet Chats give you the unique opportunity to participate in a live discussion with VMware experts and ask all of your burning questions related to the topic at hand. We previously discussed tips for getting started with vSAN and how to prepare for VMworld. In our most recent #vSANChat, we turn our attention towards Read more...
Data placement availability

Feature in Five: vSAN Data Placement and Availability

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Welcome to “Feature in Five” our byte-sized yet expansive explanation of various industry-leading VMware product solutions, all in -you guessed- five short minutes! Last time, we video-profiled Cloud-Native Storage on vSAN; in this edition, we turn our attention to vSAN Data Placement and Availability. In this Feature in Five, our vSAN expert, Jeff Hunter, demos how Read more...